Distance between ROV and sea ice from ROV survey PS122/1_6-16 on 2019-11-05, survey 1@en

The distance between a remotely operated vehicle (ROV) and the sea-ice underside was measured by a single-beam upward-looking acoustic sonar altimeter (Tritech PA500) attached to the ROV during the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition between November 2019 and September 2020. Sea-ice draft was derived by subtracting the distance to the sea-ice underside from the ROV depth, uncorrected for ROV attitude (pitch, roll). An offset between the depth reference (ROV bumper bars) and the altimeter of 0.105 m is accounted for in the presented data.2019年11月至2020年9月的北极气候研究多学科漂流观测站（Multidisciplinary drifting Observatory for the Study of Arctic Climate，后文简称MOSAiC）科考航次中，安装于遥控无人潜水器（Remotely Operated Vehicle，后文简称ROV）的单波束向上型声学声呐高度计（Tritech PA500），对该潜水器与海冰下表面之间的距离进行了测量。海冰吃水深度通过将遥控无人潜水器的深度减去其与海冰下表面的距离计算得到，该结果未校正潜水器的俯仰与横滚姿态。本次发布的数据已校正深度参考基准（遥控无人潜水器防撞杆）与声呐高度计之间0.105米的偏移量。